Audio amplifier and method for recognition an audio amplifier
US9130512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2009 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jun 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3026
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Audio amplifiers are used in many known forms in music systems, for example for domestic use or for playing music in cinemas, discos etc., but also in public address systems, as are known, for example, in public buildings, schools, universities etc. for making announcements. The invention proposes an audio amplifier (1) for amplifying an input signal into an output signal using an output amplifier stage (6), wherein the output amplifier stage (6) is designed to amplify an intermediate signal into the output signal, and wherein the output amplifier stage (6) is in the form of an amplifier which operates in switching mode, and having a limiter device (4) which is designed, from a program and/or circuit point of view, to generate the intermediate signal on the basis of the input signal, wherein the level of the intermediate signal is always limited as a function of an adjustable maximum level in such a way that the output signal does not exceed the maximum level independently of the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.